I have ported the BIOS Boot Animation from the Galaxy Note II to our Core. It still says Galaxy Note II because I can't really change the text.
But, I did change the resolution from 720x1280 to 480x800 so it looks normal on our phone.
I take no credit for the boot animation itself, I just changed the images around.
First, flash enabler.zip to enable custom animations
Second, boot and copy bootanimation.zip to system/media, overwrite the file and set permissions to r-w-rr.
Reboot and Enjoy!
In Case Something Goes Wrong:
If you see a black screen after the animation, (I'm not sure if this will happen), boot into CWM and flash NexusBootAnimation.zip.
If you want to go back to the default Samsung Logo, flash disabler.zip.
PLEASE remember to backup in case it doesn't work. ALSO, DO NOT FLASH bootanimation.zip, push it to system/media.